Analisis Daya Dukung Fondasi Tiang Pancang menggunakan Metode Analitik dan Metode Elemen Hingga

Zakwan Gusnadi; Dina Sekar  Arum; Asrinia Desilia; Herwan Dermawan; Iman Handiman

doi:10.22487/renstra.v7i2.802

Authors

Zakwan Gusnadi Jurusan Teknik Sipil, Fakultas Teknik, Universitas Siliwangi, Tasikmalaya, Indonesia 46115
Dina Sekar Arum Jurusan Teknik Sipil, Fakultas Teknik, Universitas Siliwangi, Tasikmalaya, Indonesia 46115
Asrinia Desilia Prodi Teknik Sipil, Fakultas Pendidikan Teknologi dan Industri, Universitas Pendidikan Indonesia, Bandung, Indonesia 40154
Herwan Dermawan Prodi Teknik Sipil, Fakultas Pendidikan Teknologi dan Industri, Universitas Pendidikan Indonesia, Bandung, Indonesia 40154
Iman Handiman Prodi Teknik Sipil, Fakultas Pendidikan Teknologi dan Industri, Universitas Pendidikan Indonesia, Bandung, Indonesia 40154

DOI:

https://doi.org/10.22487/renstra.v7i2.802

Keywords:

pile foundation, axial bearing capacity, lateral bearing capacity, analytical method, finite element method, static load test

Abstract

Pile foundations are one type of deep foundation widely used in high-rise building construction and heavy infrastructure, especially in areas with low-bearing soil conditions. This study aims to analyze the ultimate bearing capacity (Qult) of axial and lateral piles using analytical methods, finite element methods (FEM), and comparing them with the results of static axial load tests in the field. The data used includes SPT test results, laboratory data, and static load test (SLT) results. The analytical methods include the Meyerhof and Alpha approaches for axial bearing capacity and the Broms method for lateral bearing capacity. FEM modeling was performed using 2D FEM software. Soil interpretation from BH-1 and BH-3 indicates the presence of soft clay layers up to a depth of 22–24 m with a layer of dense sand below. SLT indicates TP-03 has the lowest Qult (190 tons), but analytical analysis shows the highest Qult (279 tons). Elastic settlement at all test points remains within safe limits based on the Vesic approach. Lateral Qult at all piles demonstrates good performance against 12 mm and 25 mm deflections, with optimal performance at TP-03 and TP-05. FEM analysis shows the maximum settlement at TP-03 (18.04 mm) and the highest axial Qult at TP-05 (201 tons), with a safety factor >2 for all piles. FEM provides the closest estimate to field test results (SLT), while the analytical method yields higher values. In lateral analysis, the analytical method showed larger results than FEM, with the largest difference of 212.35 kN on TP-03. This study provides an important contribution to the selection of analysis methods and pile foundation design on low-quality clay soil

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